DISTRIBUTION MEASURING EXPLOSION-PROOF LOCAL STATION of DMEPLE type

DISTRIBUTION MEASURING EXPLOSION-PROOF LOCAL STATION of DMEPLE type

DMEPLE
-
Distribution measuring explosion-prooflocal station
X
-
Input device execution code
XXX
-
Capacity of the power transformers (rated switch current), A
X
/
Class of input voltage, KV
XX
-
Output voltage class, kV
XXX
-
Code of modules attached
UHL5
Climatic option according to GOST 15150-69

Specifications

Parameter Type 1 Type 2 Type 3
    1 Nominal ccc HVS voltage, kV 6 6 / 10 0,4 / 0,66 / 1,2
    2 Rated voltage of the secondary circuits 110 / 220 110 / 220 110 / 220
    3 Rated frequency, Hz 50 50 50
    4 Insulation resistance of live parts
- max high voltage, Mom
- max low voltage, Mom


2

150
2


2
    5 Rated current of input disconnector, A 400 400 1600
    6 Mechanical durability of disconnector contacts, 'on-off' cycles, not less than 2000 2000 2000
    7 Full time of switching off of switching device upon actuating the protection against short-circuit and earth leakage currents, no more, with 0,12 0,12 0,2
    8 Amplitude of switching overvoltage, not more than, sec 4UФ
    9 Rated interrupting capacity of switching device, kA 20 50 50

Depending on the list of tasks to be performed, DMEPLE station can be equipped with one or several modules (with the obligatory presence of input device). Modules are interchangeable; in case of repair, it is possible to replace only the non-working module, without the need to transport the whole station.

Complectation

DMEPLE station is made explosion-proof with spark-safe circuits for connection of sensors, as well as control and alarm circuits, it has the explosion protection marking as follows: PB Exd[ia] | x or PB Exd [ia op is] | x and maybe applied in gas- and/or pulverized coal hazardous mines in accordance with norms and regulations in force in field of industrial safety.

Distribution measuring explosion-proof local station of DMEPLE type is intended for feeding, remote and local control of the electric drives of mechanisms of coal-mining complexes and other current collectors in AC mains with the isolated neutral of the underground workings in mines (gas- and/or pulverized coal hazardous).

The DMEPLEinput devices provide:

  • Input and connection of the power cable;
  • indication of input voltage presence(for type 2);
  • mechanical and electrical locking (disconnector-door-switching device) electrical protections* (27, 50, 59, 79, etc.);
  • blocking of switching device disconnected by protections;
  • possibility to connect the external protections;
  • serviceability check of the protection alarm and operating modes indication (currents, voltages);
  • technical recording of electricity transmission data and the ability to control switching device with dispatcher's workstation via the RS-485 interface (Modbus Protocol);
  • logging of the abnormal occurrences logbook and registration of changes in the parameters.